tailieunhanh - how to master skills for the toefl ibt listening advanced part 22

. You will probably find that you need more sentences. If so, write them at this time, and place them hi the appropriate paragraphs in the appropriate section of the essay. Do not spend too much time writing the sentences. In the margins next to the sentences, write numbers that will indicate the proper order of the sentences. | Unit 6 Understanding Organization 4. Listen to the lecture and fill in the blanks to complete the lecture notes. 1 Professor gives and philosophers describe its principles B Isaac Newton discovers light is rnode of C Johann Heinrich Schulze learns light can silver nitrate t Joseph Nfcephore Niepce creates first photographic image 2 Louis Daguerre experiments with photography A Captured cn image that ft. Developed photographic plates 3. William Henry Talbot developed process 4 Frederick Scott Archer invented Collodion process 5 Cameras first mass-marketed in_ 6 More inventions later 5. Complete the following summary with the words given below. The history of photography is a long one. In the fourth and fifth centuries . Greek and Chinese philosophers were already 01 the basic principles of cameras. In 1727 Johann Heinrich Schulze discovered that would darken silver nitrate Finally in 1814 a Frenchman. Joseph Nicdphore Nidpce created a photographic image but it wasn t very practical because it needed to be exposed to light for131 and the image quickly faded. In 1833 his business partner. Louis Daguerre became the first to capture a permanent image. He accomplished this by immersing the image l Also he developed which significantly reduced the required exposure time to thirty minutes. In 1841 William Henry Talbot w_a process that to have multiple copies of the same image. Finally in 1851 Frederick Scott Archer invented the Collodion process in which images 183 of light exposure. at least eight hours in salt only required a few seconds familiar with invented made it possible photographic plates exposure to light 6000 Listen to part of a lecture in an archeology class. QhD How does the professor organize the lecture a By comparing North American excavations with Eastern excavations By comparing two types of excavations By discussing the history of excavations D By discussing the different types of rescues According to the professor what is one way .